CSS color
aqua
#00ffffrgb(0, 255, 255)hsl(180, 100%, 50%)oklch(0.905 0.155 194.8)Aqua on this page is the real value, not a screenshot: exact hex, RGB, HSL and OKLCH, ten tints and ten shades, classic harmonies, and WCAG contrast with fixes — plus the 1 public brand that uses it and the palettes it appears in.
Colors that go with aqua
Deep Sky Blue, Charcoal and Taupe lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.
Deep Sky Blue #00bfff
analogousshippedDeep Sky Blue is aqua's neighbour on the wheel, so the two read as one family — use it for hover states, gradients and secondary surfaces.
Charcoal #36454f
neutralshippedCharcoal is the text near-black for aqua: softer than #000 and cool enough to feel like part of the same palette.
Taupe #483c32
shippedTaupe is paired with aqua in 5 real palettes, including Astro's brand system and Mint Chip, as the text colour against it.
Light Coral #f08080
complementaryLight Coral sits directly opposite aqua on the wheel — the strongest contrast one hue can give another, so use it small: a button, a link colour, one highlight.
Crimson #dc143c
shippedCrimson is paired with aqua in 3 real palettes, including Formula 1's brand system and Tiffany & Co.'s brand system, as the supporting colour.
Steel Blue #4682b4
shippedDesigners have shipped Steel Blue with aqua: 3 real palettes, including Astro's brand system and Glacier, as the lead colour.
Coral #ff7f50
split-complementCoral is a split-complement of aqua: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Hot Pink #ff69b4
split-complementHot Pink is a split-complement of aqua: nearly opposite, so it still pops against it, without the vibrating edge of a true complement.
Real palettes that use aqua
Tints & shades
Harmonies
Contrast
| aqua as text | Ratio | AA | AA large | AAA | Fix |
|---|---|---|---|---|---|
Aaon white | 1.25:1 | fail | fail | fail | |
Aaon black | 16.75:1 | pass | pass | pass | Passes AAA — no fix needed. |
Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with aqua as the background.
Brands using this color
Fonts for this mood
aqua reads as cool, vivid, technical. The font library is tagged with the same vocabulary:
Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.
https://mcp.brandsweets.com/colors/mcpclaude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
›analyze #00ffff and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link
/palettes/new/00ffff-a2bbbe-d45994-1f272d-e9f1ed?lock=0&style=vibrantWant the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.
Machine-readable: color.md